Each of these four threaded steel canisters contains 16 grams of 100% pure high velocity CO2 gas. In just a few seconds, 8-9 lbs. of inflation is discharged into your tire by each canister. The reusable lossless valve adapter allows no leakage and has solid brass fittings. ATVs and pocket bikes will generally use just one canister to fully inflate the tire. On a full-size sport or adventure-touring motorcycle tire, it will generally take all four canisters to reach 24 - 32 lbs. of pressure depending on tire size. This kit is for use on motorcycles, scooters, ATVs, Golf Carts, Lawnmowers, and small utility tires. Learn More